EP 0342843 A1 19891123 - Process for preparing racemic dihalovinylcyclopropane carboxylic acid halides.
Title (en)
Process for preparing racemic dihalovinylcyclopropane carboxylic acid halides.
Title (de)
Verfahren zur Herstellung von racemischen Cyclopropancarbonsäurehalogeniden.
Title (fr)
Procédé pour la préparation d'halogénures d'acides cyclopropanecarboxyliques racémiques.
Publication
Application
Priority
- JP 12284388 A 19880519
- JP 12862788 A 19880526
- JP 17565288 A 19880713
- JP 17565388 A 19880713
- JP 19915688 A 19880809
Abstract (en)
Racemic dihalovinylcyclopropane carboxylic acid halides, which are intermediates of such insecticides as permethrin, cypermethrin etc., are prepared by allowing phosphorus iodides, silicon iodides or boron iodides to react with optically active dihalovinylcyclopropane carboxylic acid halides of the formual <CHEM> wherein X and Y stand for halogen atoms and the mark * shows an asymmetric carbon atom.
IPC 1-7
IPC 8 full level
C07C 51/487 (2006.01)
CPC (source: EP US)
C07C 51/487 (2013.01 - EP US)
Citation (search report)
- [Y] US 3989750 A 19761102 - NAGASE TSUNEYUKI, et al
- [Y] US 4182906 A 19800108 - NAGASE TSUNEYUKI [JP], et al
- [Y] EP 0261824 A1 19880330 - SUMITOMO CHEMICAL CO [JP]
- [A] US 3090807 A 19630521 - GERHARD ILLING, et al
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0342843 A1 19891123; EP 0342843 B1 19930303; DE 68905073 D1 19930408; DE 68905073 T2 19930617; HU 205597 B 19920528; HU T51223 A 19900428; US 4962233 A 19901009
DOCDB simple family (application)
EP 89304662 A 19890509; DE 68905073 T 19890509; HU 248589 A 19890518; US 34905689 A 19890509